Summary: Summary: HVAC replacement in 2026 costs roughly $7,000 to $15,000 installed for central AC plus a gas furnace, $10,000 to $22,000 for an air-source heat pump, $4,500 to $8,000 for a furnace alone, and $5,000 to $9,000 for central AC alone. New ductwork adds $3,000 to $5,000. Prices rose 5 to 8 percent in 2026 on the R-410A refrigerant phase-out and labor costs. The federal 25C tax credit ended for equipment placed in service after December 31, 2025: check state and utility rebates instead.
What your quote is actually buying
An HVAC quote has four parts: equipment (the condenser, coil, furnace or air handler), labor (now up to 55 percent of project cost, up from 48 percent in 2020), materials beyond the box (refrigerant lines, pad, disconnect, thermostat, sheet-metal transitions), and permits plus inspections. The January 2025 ban on R-410A refrigerant in new equipment forced complete redesigns to R-454B and R-32 systems, which is a major reason 2026 prices run 5 to 8 percent above 2025.
Sizing is the technical heart of the quote: about 1 ton of capacity per 500 square feet is the rule of thumb, refined by a Manual J load calculation that accounts for insulation, windows, and climate. Bigger is not better: an oversized system short-cycles, dehumidifies poorly, and dies young. Any contractor who sizes your system by square footage alone, without a load calculation, is guessing with your money.
How to compare HVAC quotes
Compare identical efficiency ratings: SEER2 for cooling, HSPF2 for heat pumps, AFUE for furnaces. A 16 SEER2 system and a 20 SEER2 system are different products at different prices; the higher efficiency costs more upfront and less to run. Ask for the AHRI certificate number proving the rated combination: mismatched coils and condensers do not deliver their nameplate efficiency.
Look past the equipment to the installation quality items: new refrigerant lines or a documented flush of old ones, a new pad and disconnect, sealed duct connections, proper condensate drainage, and a startup commissioning report with refrigerant charge and airflow measurements. Most premature HVAC failures are installation failures. The best equipment installed badly loses to mid-grade equipment installed meticulously, every time.
2026 HVAC replacement cost by system
Installed ranges for a 2,000 sq ft home from contractor pricing data. High-efficiency and cold-climate variants run higher. Download this table as CSV.
| System | Installed cost | Lifespan | Best for |
|---|---|---|---|
| Central AC + gas furnace | $7,000-$15,000 | 15-25 yr | Most US homes |
| Air-source heat pump | $10,000-$22,000 | 12-20 yr | Moderate climates, electrification |
| Cold-climate heat pump | $14,000-$28,000 | 15-20 yr | Northern tier |
| Ductless mini-split (2-4 zone) | $4,500-$15,000 | 15-22 yr | Additions, no ducts |
| Gas furnace only | $4,500-$8,000 | 18-25 yr | Heating-only replacement |
| New ductwork adder | $3,000-$5,000 | 30-50 yr | Old or damaged ducts |
HVAC cost guides
- How much a new HVAC system costs in 2026: system-by-system pricing and what drives quotes
- Furnace vs heat pump vs AC: the full cost comparison across system types
- HVAC tax credits and rebates in 2026: 25C ended: what incentives still exist
- The $5,000 rule: repair vs replace: when to fix your HVAC and when to replace it
- How long HVAC installation takes: typical timelines from quote to cold air
Related tools
- Window Replacement Cost Calculator: tighter windows shrink your heating and cooling loads
- Roof Replacement Cost Calculator: attic ventilation and roofing affect HVAC sizing
- Home Warranty Cost Calculator: what a warranty covers when the compressor dies
Frequently asked questions
- How much does a new HVAC system cost in 2026?
- Central AC plus a gas furnace runs $7,000 to $15,000 installed; an air-source heat pump runs $10,000 to $22,000; a furnace alone $4,500 to $8,000; central AC alone $5,000 to $9,000. New ductwork adds $3,000 to $5,000.
- Is there a federal tax credit for HVAC in 2026?
- No. The Section 25C Energy Efficient Home Improvement Credit ended for equipment placed in service after December 31, 2025. State and utility rebates for heat pumps remain widely available: check your utility's rebate page.
- How long does HVAC replacement take?
- The installation itself is typically 1 to 2 days for a straightforward changeout. Ductwork replacement adds 1 to 3 days. From signed contract to install day, allow 1 to 4 weeks depending on equipment availability.
- Should I repair or replace my HVAC?
- Use the $5,000 rule: multiply the repair cost by the system's age in years; if it exceeds $5,000, replace. Also replace systems past 15 years needing major repairs, or using phased-out R-22 refrigerant.
Data current as of October 2026. Sources: contractor pricing data and manufacturer guidance. Estimates only, not a quote. Always get multiple written quotes from licensed local HVAC contractors.